如何初始化二维数组的数组？ [英] How to initialize an array of 2D-arrays?

问题描述

我有二维数组的数组。例如，它是这样的：

I have an array of 2D-arrays. For example, it is like:

{{{0, 0, 1}, {1, 0, 0}}
{{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}}
{{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}}

但如果我写

int [,][] arrays={{{0, 0, 1}, {1, 0, 0}}
                  {{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}}
                  {{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}};

编译器会抱怨预期。

the compiler will complain "; expected".

如果我写

int [,][] arrays={new int[,] {{0, 0, 1}, {1, 0, 0}}
                  new int[,] {{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}}
                  new int[,] {{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}};

编译器会抱怨

the compiler will complain

嵌套数组初始化预期。

那么，为什么会出现这种情况，什么是初始化的正确方法？

So why does this happen and what is the correct way of initialization?

推荐答案

您正在尝试创建不规则数组。你的阵列有 N 行，因此你的第一方应该是[]不是[，]。元中的每一行（ N 的指数）是二维数组，所以你需要使用 [，] 。最后，您可以通过修复INT改变您的问题 [] [] 到 INT [] [，] 。

You're trying to create jagged array. Your array has n rows so your first square should be [] not [,]. Element in each row (index of n) is 2D array so you need to use [,]. Finally, you can fix your problem by change int [,][] to int[][,].

int[][,] arrays = {
    new int[,] {{0, 0, 1}, {1, 0, 0}},
    new int[,] {{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}},
    new int[,] {{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}
};

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